Which factors led to the Dust Bowl of the 1930s? clearing of grasslands earth tremors erosion fertilizer runoff overgrazing volcanic eruption

Upon what two factors is the probability of earthquake occurance based

What does the plate tectonic theroy describe?

The figurative use of cradle is used to mean "the place or region in which anything is nurtured or sheltered in its earlier stage" - such that the term cradle of civilization means the place where civilization was first nurtured and sheltered.

The diagram shows cross-cutting relationships among rocks. 3 dimensional representation of cross-cutting relationships. Left side, labeled B, C, E, and F. Right side labeled A and D.

The map above shows the countries of the Middle East. Which country is highlighted? A. Turkey B. Israel C. Afghanistan D. Iran

Which of the following kinds of environmental problems is irreversible? A. Water pollution B. Extremely high atmospheric carbon dioxide levels C. Polar ice pack melting D. Species extinction

How can we calculate the mean temperature of a particular place?

What conditions make for a violent volcanic reuption?

Why is the Amazon River called the Ocean River?

What did hitler not push the Jewish question in Denmark